“…In our study, malignancy was a major risk factor for UEDVT, similar to studies conducted in Caucasian population. 1,3,4 In our study, the frequency of cancer (65.5%) was even higher than those in Caucasian population in other studies, which had 43%, 15 30%, 16 38%, 17 and 45%. 4 Similar studies on Chinese population have already been published.…”